<!DOCTYPE html>
<html>

<head>
    <meta charset="UTF-8">
    <title>测试页面</title>
    <style>
        body {
            width: 35em;
            margin: 0 auto;
            font-family: Tahoma, Verdana, Arial, sans-serif;
        }
    </style>
</head>

<body>
    <h1>Hello World</h1>
    <h1>你好，世界！</h1>
</body>

</html>